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Published In: Dictionnaire des Sciences Naturelles, ed. 2, 25: 420–421. 1822. (Dict. Sci. Nat. (ed. 2)) Name publication detailView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 1/4/2012)
Acceptance : Accepted
Project Data     (Last Modified On 1/4/2012)
Contributor Text: M. Qaiser and Rubina Abid
Contributor Institution: Federal Urdu University of Arts, Science & Technology, Karachi.

and

Department of Botany, University of Karachi, Karachi-75270

Synonym Text: Chaptalia sensu Sprengel, Caroli Linnaei, Systema vegitabilum 3: 504. 1826 non Vent 1802; Cleisthanium Kunze in Bot. Zeit. 9: 40. 1851.
General/Distribution: A genus with about 6 species, distributed in China, Nepal, India, Pakistan, Siberia, Japan, Taiwan, Southwestern United States, Mexico and Guatemala. In Pakistan it is represented by one species.

 

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Perennial. Capitula on long bracteate scape, heterogamous, radiate. Occuring into two distinct forms on the same plant at different seasons (spring and late summer).

Vernal form (spring): Leaves undeveloped or wanting, lanate or araneous beneath. Capitula small. Ray florets female with few staminodes, outer corolla lip enlarged; Disc florets bisexual, corolla lips  equal. Cypsela elliptic, 5-8-ribbed, pubescent, tapering above or beaked. Pappus bristles finely barbellate or capillary.

Autumnal form (Late summer): Leaves large, lyrate-pinnatifid, capitula relatively large, cleistogamous. All florets tubular, of two types; outer ones female, lower lip tridentate, upper lip reduced, staminodes absent; inner florets bisexual. Cypsela similar to vernal generation but larger.

 
 
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